Creates a presumption that the person is receiving compensation from an organization of lobbying efforts for any individual with a substantial ownership in or is a paid employee, officer, or director of an organization and actively participates in lobbying activities; makes contracts void or voidable a contract entered into by the state in violation of this chapter; expands the definition of lobbying to include communications concerning the solicitation or award of a contract or a proposal before an administrative agency or a potential future vendor relationship with an administrative agency; excludes from lobbying communications about a request for proposals, contract, or vendor relationship if initiated by a legislator or state employee; companion to SB 290.